相关分析在机械振动信号处理中的应用

Application of Correlation Analysis in Mechanical Vibration Signal

信号的消噪处理和信号源识别是振动分析中的两个重要问题。首先介绍了相关性在信号滤波方面的应用,分析对比了相关性在消噪方面的应用范围、优点和不足,重点介绍了三重相关和多重相关的方法和研究发展情况;其次介绍了相关分析在振源和噪声源识别中的两种应用方法,着重介绍了偏相干方法的发展、应用、要注意的问题以及有待研究的问题;最后总结了相关分析在振动消噪和噪声源识别上的优缺点,指出了相关分析在振动信号处理中应用的发展趋势。

The signal de-noising processing and signal source identification are two important problems in mechanical vibration analysis. Firstly, this paper introduces applications of analysis in signal de-noising processing and the tdple correlation and multi-correlation and by comparison with other methods, analyzes the characters and application range of correlation method. Secondly, it introduces, two application methods of correlation analysis in the source identification of vibration and noise, and emphatically does the development, application and key problem of the partial coherent function method. Finally, it summarizes the advantage and disadvantage of correlation analysis in the source identification of vibration and noise and points out the development trend of correlation analysis in vibration signal processing.